220 589 00 99 09 Adapter line - WS54.00-P-0050-09B

MODEL ALL 

FG 15/42/43/54/Set B 

Use: 

Adapter line with 4 mm jack for testing systems with 4 mm dia. contacts. (Set=1 black and red each)

Fig 1: Identifying Adapter Line (220 589 00 99 09)

Courtesy of MERCEDES-BENZ USA